The effects of any budget/program decisions made since the information was collected during 1997-98 are NOT reflected in the National Security Space Road Map (NSSRM).

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(U) Extremely High Frequency (EHF) satellites provide protected, jam resistant, low probability of intercept, and survivable (anti-scintillation) communications for strategic and tactical military communications in any military environment. EHF communications satellites provide communications to ensure minimum essential command and control of the warfighting forces of the U.S. The Milstar satellites will provide the primary means of communicating using the EHF frequency from 65 degrees north lattitude to 65 degrees south lattitude. Two Polar Adjunct packages will be launched on host satellites to provide 24-hour communications in the polar regions. The Advanced EHF satellite is being developed as the replacement for the Milstar satelites.

• Related Initiatives
• Related Categories
• Road Map Placements
• Additional Hotlinks

Related Initiatives (U):

This Table Is Unclassified.

Name	Title
Advanced EHF	Advanced Extremely High Frequency (EHF)
EHF Replenish Sat	Extremely High Frequency (EHF) Replenishment Satellite
Milstar I	Milstar I
Milstar II	Milstar II
POLAR ADJUNCT I	Polar Adjunct I
POLAR ADJUNCT II	POLAR ADJUNCT II

Related Categories (U):

This Table Is Unclassified.

Name	Title
Space Systems	Space Systems

Road Map Placements (U):

This Table Is Unclassified.

Name	Title
MILSATCOM	SPACE FORCE ENHANCEMENT: MILSATCOM

Requirements, Funding and Additional Hotlinks (U):

(U) None.

Date Of Information (U):

(U) 21 November 1997

(U) Road Map Production Date: 18 June 2001